Novel heat emitting welding flux and welding method

Abstract

The invention discloses a novel heat emitting welding flux which comprises three constituents in parts by weight: 100-150 parts of powdery heat emitting welding flux, 0.3-1 part of graphite powder and 0.3-1 part of talcum powder; the three constituents are uniformly mixed and then pressed into flake. Meanwhile, the invention further discloses a welding method utilizing the novel heat emitting welding flux, wherein the igniting manners of the heat emitting welding flux comprise igniting gun ignition and electronic igniting device ignition. The novel heat emitting welding flux has the benefits that the new form, namely the flaky heat emitting welding flux, can be stacked in a multilayered manner to be packaged so as to save packing material and then reducing the packaging cost and the recycle cost of the waste; moreover the transportation of the flaky emitting welding flux is relatively convenient, and the air transportation cost is low; in welding, the flaky emitting welding flux in certain number can be taken according to needs, isolating gaskets are not needed to be used, the operation is relatively convenient and efficient, and the welding efficiency and the welding effect are better; through the adoption of the ignition manner of electronic igniting device, personnel remote control can be realized, and the operation is relatively convenient, efficient and safe.

Description

technical field [0001] The invention relates to a novel exothermic flux and a welding method using the exothermic flux. Background technique [0002] Exothermic welding (that is, hot flux welding, which is literally translated as exothermic welding in the power industry) is a welding in which the flux is ignited by an igniter (or electric spark), and the flux undergoes a redox reaction to release a large amount of heat and simultaneously reduce the filler metal. In this way, the filler metal is finally cooled in the mold cavity to form a joint, which is a kind of self-propagating high-temperature synthesis technology. When exothermic welding is used, the interface is completely fused. Because it is a molecular combination in the true sense, the cross-sectional area of ​​the joint is generally more than twice the cross-sectional area of ​​the connected conductor. It has good electrical conductivity and high overload resistance, high temperature resistance and corrosion resis...

AI Technical Summary

Problems solved by technology

After welding, the aluminum film bags for packaging become waste. Obviously, the storage of powdery exothermic flux requires a large number of aluminum film bags, so the cost is high; the packages need to be torn apart one by one during welding, and isolation gaskets need to be placed to cover them. Diversion holes are used to ensure good sealing, and the operation is not convenient enough; after a project is completed, there are a large number of aluminum film bags left for packaging, and the recycling cost is relatively high. If it cannot be recycled in time, it will cause environmental pollution

In addition, powdery objects generally need to pass the technical appraisal of relevant departments before they can be transported by air, resulting in inconvenient transportation and high transportation costs.

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